<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
        <script src="1.js" type="module"></script>
    </head>
    <body>
        <div id="app">
            <input type="text" name="title" value="houdunren.com" />
            <h2 id="h2">yahoo.com</h2>
            <h1>
                <span>yahoo</span>
            </h1>
        </div>
    </body>
</html>
